Conversion Factors

This section includes factors for converting to and from SI units.
These factors are returned from the subroutine
CFUNIT.
Only the main factors are included here for reference
(CFUNIT
will return conversion factors from any supported units to any other
supported units of the same type e.g. _C to _R) and to
illustrate how basic unit symbols are combined.
The following sections begin with the unit type and a list
of valid variable names for that type (if any), followed by a list of
conversions from the units on the left to the units on the right.
These units are used in the CUNITS and DUNITS variable
when the mode is 'NEW' and are returned in DUNITS
when the mode is 'CURRENT'.

Mass

kg

×

0.0685217658567918

=

slug

slug

×

14.5939029372064

=

kg

kg

×

2.20462262184878

=

lbm

lbm

×

0.453592370000000

=

kg

slug

×

32.1740485564304

=

lbm

lbm

×

0.0310809501715673

=

slug

kg

×

1000.

=

g

g

×

0.001

=

kg

Length, x, y, z

m

×

3.28083989501312

=

ft

ft

×

0.304800000000000

=

m

m

×

39.3700787401575

=

in

in

×

0.0254

=

m

m

×

100.0

=

cm

cm

×

0.01

=

m

m

×

1000.0

=

mm

mm

×

0.001

=

m

Velocity, u, v, w

m/s

×

3.28083989501312

=

ft/s

ft/s

×

0.3048

=

m/s

m/s

×

39.3700787401575

=

in/s

in/s

×

0.0254

=

m/s

m/s

×

100.0

=

cm/s

cm/s

×

0.01

=

m/s

m/s

×

1000.0

=

mm/s

mm/s

×

0.001

=

m/s

Force

N

×

0.224808943099710

=

lbf

lbf

×

4.44822161526050

=

N

N

×

1 × 105

=

dyn

dyn

×

1 × 10−5

=

N

Pressure, p

N/m2

×

0.0208854342331501

=

lbf/ft2

lbf/ft2

×

47.8802589803358

=

N/m2

N/m2

×

0.000145037737730209

=

lbf/in2

lbf/in2

×

6894.75729316836

=

N/m2

Gas constant, R

m2/s2-K

×

5.97995038991999

=

ft2/s2-R

ft2/s2-R

×

0.167225467570038

=

m2/s2-K

Viscosity, mul, mut

kg/m-s

×

0.0208854342331501

=

slug/ft-s

slug/ft-s

×

47.8802589803358

=

kg/m-s

k (ofk-ε)

m2/s2

×

10.7639104167097

=

ft2/s2

ft2/s2

×

0.09290304

=

m2/s2

epsilon (ofk-ε)

m2/s3

×

10.7639104167097

=

ft2/s3

ft2/s3

×

0.09290304

=

m2/s3

rho*k (ofρk-ε)

kg/m-s2

×

0.0208854342331501

=

slug/ft-s2

slug/ft-s2

×

47.8802589803358

=

kg/m-s2

rho*epsi (ofρk-ε)

kg/m-s3

×

0.0208854342331501

=

slug/ft-s3

slug/ft-s3

×

47.8802589803358

=

kg/m-s3

Thermal conductivity, kappa

N/s-K

×

0.124893860586174

=

lbf/s-R

lbf/s-R

×

8.00679869536116

=

N/s-K

Density, rho

kg/m3

×

0.00194032033197972

=

slug/ft3

slug/ft3

×

515.378818393196

=

kg/m3

rho*u, rho*v, rho*w

kg/m2-s

×

0.00636588035426416

=

slug/ft2-s

slug/ft2-s

×

157.087463846246

=

kg/m2-s

rho*e0

kg/m-s2

×

0.0208854342331501

=

slug/ft-s2

slug/ft-s2

×

47.8802589803358

=

kg/m-s2

Energy, e, h

J (= N-m)

×

0.737562149277265

=

lbf-ft

lbf-ft

×

1.3558179483314

=

J (= N-m)

J

×

1 × 107

=

erg

erg

×

1 × 10−7

=

J

Entropy, s

J/K (= N-m/K)

×

0.409756760453328

=

lbf-ft/R

lbf-ft/R

×

2.44047224234608

=

J/K (= N-m/K)

Temperature, T

K

×

9/5

=

R

R

×

5/9

=

K

Note: Conversion factors and reference conditions are stored
in single precision format.
When using the conversion factors in computations, use double precision
calculations and assign to a single precision variable.
This will ensure that accurate conversion factors and reference conditions
will be maintained.
Failure to do this may cause slight differences in the residual history.